133145965 has 8 divisors (see below), whose sum is σ = 166722048. Its totient is φ = 101885520.

The previous prime is 133145963. The next prime is 133146001. The reversal of 133145965 is 569541331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133145965 - 2¹ = 133145963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133145963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578781 + ... + 579010.

It is an arithmetic number, because the mean of its divisors is an integer number (20840256).

Almost surely, 2^133145965 is an apocalyptic number.

It is an amenable number.

133145965 is a deficient number, since it is larger than the sum of its proper divisors (33576083).

133145965 is a wasteful number, since it uses less digits than its factorization.

133145965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157819.

The product of its digits is 48600, while the sum is 37.

The square root of 133145965 is about 11538.8892446370. The cubic root of 133145965 is about 510.6335392114.

The spelling of 133145965 in words is "one hundred thirty-three million, one hundred forty-five thousand, nine hundred sixty-five".